cervical and cranial nerves Flashcards

1
Q

ansa cervicalis superior root levels and inferior root levels

A

superior: C1-C2
inferior: C2-C3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Superficial cervical nerves from C2-3

A

lesser occipital nerve
greater auricular nerve
transverse cervical nervre

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

superficial cervical nerves from C3-C4

A

supraclavicular nerves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

where is the loop of the ansa cervicalis located

A

near the tendon of the omohyoid muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what does the ansa cervicalis directly innervate?

A

all the infrahyoid muscles except the nerve to the thyrohyoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

superior root of AC followed up to find what nerve which gives off what nerve

A

hypoglossal nerve

gives off nerve to thyrohyoid m

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what is the landmark near the n to thyrohyoid

A

tip of hyoid bone in heart of carotid triangle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

where does the the phrenic nerve cross and lie

A

crosses anterior scalene, posterior to IJC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what crosses over the phrenic nerve?

A

transverse cervical artery

suprascapular artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what artery follows the phrenic nerve

A

ascending cervical artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

GSA fibers convey what info from where and localization?

A

pain, temp, tactile, pressure, proprioception by trigeminal nerve to structures of ectodermal origin
-sharp, highly localized sensations

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

General Visceral afferent fibers

A

visceral pain and reflexes

  • vagus nerve distribution from posterior 1/3 of tongue to midportion of transverse colon
  • dull achy, burning, poorly localized
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

General somatic efferent

A

innervate muscles of myotomic origin, extraocular m and intrinsic m of tnogue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

general visceral efferent fibers

A

components of ANS and innervate SM and glands

-course with cranial nerves III,VII,IX,X

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

All GSA fibers from cranial nerves ______ terminate where?

A

V,VII,IX,X

trigeminal sensory nuclei

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

3 parts of trigeminal sensory nuclei and fnct

A

mesencephalic: proprioception info from facial muscles
main sensory nucleus: tactile discrimination info from face
descending nucleus of V: crude tactile, pain, temp from face

17
Q

solitary nucleus or NTS recieves what fibers

A

GVA and SVA
GVA from posterior 1/3 of tongue to mid transverse colon
SVA taste anterior 2/3 via VII and 1/3 posterior tongue via IX, and epiglottis via X
-Vagus nerve is main input

18
Q

motor nuclei fibers and what nucleus

A
GSE, muscles of myotomic origin
-oculomotor nucleus
-trochlear nucleus
abducens nucleus
-hypoglossal nucleus
19
Q

SVE nuclei innervate muscles of what origin

A

branchiomeri (branchial arches)

20
Q

trigeminal—> brachial arch __—> what muscles

A

brachial arch 1–> muscles of mastication

21
Q

facial to what brachial arch to what muscles

A

brachial arch 2 to muscles of facial expression

22
Q

nucleus ambiguus to what brachial arch to what muscles

A

arch 4 to pharyngeal and laryngeal muscles

23
Q

Lesions of nerve IX result in what

A

loss of GDS
gag relex
slight dysphagia
loss sensation in pharynx and posterior 1/3 of tongue

24
Q

lesions in cranial nerve X results

A

dysphonia
dysphagia
dyspnea
loss of gag or cough reflex

25
lesion in accessory nerves
inability to shrug the shoulder and flex and rotate head
26
lesion of cranial nerve XII results
deviation of protruded tongue towards affected side
27
common characteristics of cranial nerves IX-XII
they all exit skull at jugular foramen and are at base of skull between IJV and ICA -deep to parotid gland at neck of mandible
28
vernet's syndrome
basilar skull fracture involving jugular foramen = ipsilateral IX,X,XI paralysis
29
collet's or sicard's syndrome
inury to retroparotid space | -paralysis of cranial nerves IX-XII and cervical sympathetic trunk (horner's syndrome)